Option "B"
If they misfire on the first strike & then fire on the second they are too small. (the first hammer strike drives them onto the nipple enough for the second to ignite them.)
If they fall off no matter what you do then they are too big. (You can pinch them to make a better fit but there is some discussion on whether this increases the chance for multiple chamber ignition or chain-firing)
If they misfire on the first strike & then fire on the second they are too small. (the first hammer strike drives them onto the nipple enough for the second to ignite them.)
If they fall off no matter what you do then they are too big. (You can pinch them to make a better fit but there is some discussion on whether this increases the chance for multiple chamber ignition or chain-firing)